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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

Titanium oxychloride is an unstable chemical compound which results from the hydrolysis of titanium tetrachloride.

1. step: TiCl4 + H2OTiOCl2 + 2 HCl

2. step: TiOCl2 + H2OTiO2 + 2 HCl

Summary reaction: TiCl4 + 2 H2OTiO2 + 4 HCl

In water the complete hydrolysis reaction takes place immediately. For this reason the target substance cannot get isolated and studies on physico-chemical properties on the substance itself generally are technically not feasible. Target compound titanium oxychloride only can get stabilised in aqueous solution by shifting the chemical equilibrium shown above toward the side of titanium oxychloride via addition of hydrochloric acid. Only on a few endpoints some data are available, usually from company MSDS. The data always reflect to the properties of a mixture of an aqueous solution of titanium oxychloride in coexistence with hydrochloric acid.

  Property      Data reported  Comments 
 Appearance   

colourless to yellow liquid with biting odour

 
Biting odour due to evaporation of hydrochloric acid. 
    Melting point -60 to +10 °C  Data from different company MSDS. Exact determination of MP not possible. Data also varying due to different percentages of titanium oxychloride and hydrochloric acid.
Boiling point     decomposition in the range 35 to 50 °C   Data from different company MSDS. Exact determination of BP/decomposition not possible. Data also varying due to different percentages of titanium oxychloride and hydrochloric acid. 
   Rel. density   1.4 to 1.6

The relative densitiy of the solution containing target compound titanium oxychloride of ca. 1.5 is higher than the density of the pure medium hydrochloric acid of ca. 1.1.

    Vapour pressure

150 hPa (30 °C) to

196 hPa (25 °C) 

 Data from different company MSDS. Data varying due to different percentages of titanium oxychloride and hydrochloric acid.  
    Water solubility hydrolysis  Hydrolyses immediately and completely in the environmentally and physiologically relevant pH range 
   Explosiveness   no indicator groups  
    Oxidising properties no indicator groups   
      Viscosity 73  mPa . s (20 °C)